一根木头长40分米,把它锯成相等的小段,锯了4次后,平均每段长多少分米
一根木头长40分米,把它锯成相等的小段,锯了4次后,平均每段长多少分米
数学人气:231 ℃时间:2019-08-21 03:59:16
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